Results 231 to 240 of about 11,887 (262)

Effect of welding conditions on the impact toughness of welded joints in titanium alloys

Welding International, 2011
Effect of the welding conditions and annealing on the impact strength of different heat-affected areas of the titanium welded joints is studied. Maximum impact strength is established in the range of 350–550°C, in practice this coincides with the temperature peaks for short-time strength and fatigue life.
V. Yu. Zubarev, B. A. Kolomenskii, A. B. Kolomenskii   +2 more
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Impact of Welding Sequence on the CRDM Nozzle-to-Vessel Weld Stress Analysis

Flaw Evaluation, Service Experience, and Materials for Hydrogen Service, 2004
A three-dimensional finite element model is presented to simulate the welding process of the side-hill control-rod-drive-mechanism (CRDM) nozzle to the vessel head. Emphasis is given to how the weld is laid out in the analysis so that accurate residual stress results can be obtained while the required computing time is viable.
Yaoshan Chen, David Rudland, Gery Wilkowski   +2 more
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Impact Modeling of Spot Welds

AIP Conference Proceedings, 2004
Resistance spot welds in most current finite element crash models are characterized as a rigid link at the location of the weld which transfers the load but is not designed to fail. Newer weld elements in the popular finite element analysis codes include the option of incorporating a failure criteria for the weld element.
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Impact of External Magnetic Field on Weld Quality of Resistance Spot Welding

Journal of Manufacturing Science and Engineering, 2011
Electromagnetic stirring (EMS) has been demonstrated to have significant effect on molten metal in terms of crystal orientation, grain refinement and macro appearance of solidified structures by making use of Lorentz force. In the present study, resistance spot welding (RSW) process of 1.25 mm thick dual-phase steel DP780 with and without the external ...
Qi Shen, YongBing Li, ZhongQin Lin, GuanLong Chen   +3 more
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Impact welding and ripple formation

Journal of Applied Physics, 1975
Rippled metallic surfaces have been produced as a result of ballistic impact as well as the movement of high-pressure (explosive) gas over a metal plate. Such loading conditions produce a strong shock wave. Under the high pressure, metal plate surfaces are plastically deformed and sometimes are welded together. These welds are sometimes associated with
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Laser impact welding of aluminum to brass

Journal of Materials Processing Technology, 2019
Abstract The microstructure and mechanical properties of aluminum and brass welding joints were investigated. The microscopy image revealed that the welding interface was flat in the case of using lower laser pulse energy. When the laser pulse energy was higher than 1200 mJ, the wavy interface and local melting blocks were created simultaneously ...
Xiao Wang, Meng Shao, Hao Jin, Heng Tang, Huixia Liu   +4 more
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Impact Of Welding Parameters On The Stability Of Gas Metal Arc Welding Process [PDF]

, 2014
The stability of the welding process has a significant impact on the assurance of the required level of quality of welded joints. The increasing stability of the welding process reduces the probability of forming imperfections in the weld metal.
Lukić, Uroš, Prokić Cvetković, Radica, Popović, Olivera, Rajičić, Bratislav, Jovičić, Radomir, Burzić, Meri   +5 more
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Impact strength measurement of spot welds

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 2001
The impact strength of spot welds is a very important quality index in the automotive industry. However, impact testing is not routinely performed for weld quality testing because of its complexity, cost and relatively low reliability and repeatability.
H Zhang, M Zhou, S J Hu
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The mechanics of wave formation in impact welding

The Philosophical Magazine: A Journal of Theoretical Experimental and Applied Physics, 1975
Abstract If two metal plates are brought together at a sufficiently high relative velocity, a jet may form which removes much of the surface impurities, and a strong bond occurs. The purpose of this paper is to decribe the formation of a wave interface, and to suggest why a bond often occurs without the appearance of such waves.
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Fatigue and Impact Testing of Welded Products

1931
Fatigue and impact testing on a material do not correlate until the energy of the impact blow approaches a very small value. Single-blow impact results plotted against typical fatigue values for steel are very well illustrated by Fig. 1. Repeated light-blow impact test results plotted against fatigue values are shown in Fig.
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